1. The end of cheap oil;Campbell;Scientific American,1998
2. The Coming Oil Crisis;Campbell,1997
3. The Golden Century of Oil 1950–2050: the Depletion of a Resource;Campbell,1991
4. Nuclear energy and the fossil fuels;Hubbert;Drilling and Production Practice,1956
5. Hubbert, M.K., 1982. Techniques of prediction as applied to production of oil and gas. US Department of Commerce, NBS Special Publication 631, pp. 1–121.